Energy - As introduced, enacts the "Data Center, Artificial Intelligence, and Clean Transition Tariff Accountability Act." - Amends TCA Title 7 and Title 65.

SB 1999 creates a "Clean Transition Tariff" (CTT) requiring large data centers, AI facilities, and other energy-intensive operations (with 25+ megawatts of demand or focused on data/AI/cloud computing) to pay for new clean energy infrastructure and grid upgrades needed to support their growth. The bill ensures these costs are borne solely by the large users, preventing rate increases for residential and small business customers. It establishes a voluntary tariff system approved by the Tennessee Public Utility Commission, mandating that new clean power for these facilities must be "additional" and not funded through general ratepayers. The law also requires local utilities to enforce this cost responsibility and report on large-load impacts annually.